CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash Flows from Operating Activities
Net income (loss)	$ (99,364)	$ 81,945	$ (268,492)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Loss (gain) on debt modification and extinguishment, net	1,932	(10,896)	5,247
Depreciation and amortization, net	345,062	365,654	383,703
Asset impairment	23,003	107,308	49,266
Equity in (earnings) loss of unconsolidated ventures	(10,394)	2,107	4,544
Distributions from unconsolidated ventures from cumulative share of net earnings	6,191	766	3,472
Amortization of entrance fees	(1,758)	(2,122)	(1,634)
Proceeds from deferred entrance fee revenue	3,562	734	3,544
Deferred income tax (benefit) provision	(9,837)	(5,840)	(2,654)
Operating lease expense adjustment	(23,280)	(136,276)	(19,453)
Loss (gain) on sale of assets, net	(288,835)	(374,532)	(7,245)
Loss (gain) on facility operating lease termination, net	(2,003)	(2,303)	3,388
Non-cash stock-based compensation expense	16,270	20,747	23,026
Non-cash management contract termination gain	0	0	(969)
Other	(4,689)	(2,777)	(8,700)
Changes in operating assets and liabilities:
Accounts receivable, net	502	24,277	292
Prepaid expenses and other assets, net	(15,483)	24,707	55,873
Trade accounts payable and accrued expenses	(54,032)	27,294	(12,984)
Refundable fees and deferred revenue	(10,066)	62,614	(25,117)
Operating lease assets and liabilities for lessor capital expenditure reimbursements	30,965	22,242	31,305
Operating lease assets and liabilities for lease termination	(2,380)	0	0
Net cash provided by (used in) operating activities	(94,634)	205,649	216,412
Cash Flows from Investing Activities
Change in lease security deposits and lease acquisition deposits, net	(100)	3,569	(859)
Purchase of marketable securities	(362,257)	(378,269)	(186,224)
Sale and maturities of marketable securities	352,988	275,000	134,000
Capital expenditures, net of related payables	(176,657)	(185,871)	(304,092)
Acquisition of assets, net of related payables and cash received	0	(472,193)	(497)
Investment in unconsolidated ventures	(5,436)	(4,082)	(4,346)
Distributions received from unconsolidated ventures	37,113	0	9,635
Proceeds from sale of assets, net	334,006	331,316	92,735
Proceeds from notes receivable	1,800	5,419	34,109
Net cash provided by (used in) investing activities	181,457	(425,111)	(225,539)
Cash Flows from Financing Activities
Proceeds from debt	352,962	963,099	321,996
Repayment of debt and financing lease obligations	(441,571)	(538,859)	(427,923)
Proceeds from line of credit	0	166,381	0
Repayment of line of credit	0	(166,381)	0
Purchase of treasury stock, net of related payables	0	(18,123)	(23,955)
Purchase of capped call transactions	(15,916)	0	0
Payment of financing costs, net of related payables	(3,904)	(19,649)	(7,309)
Payments of employee taxes for withheld shares	(4,820)	(4,037)	(3,313)
Other	(408)	482	1,110
Net cash provided by (used in) financing activities	(113,657)	382,913	(139,394)
Net increase (decrease) in cash, cash equivalents, and restricted cash	(26,834)	163,451	(148,521)
Cash, cash equivalents, and restricted cash at beginning of period	465,148	301,697	450,218
Cash, cash equivalents, and restricted cash at end of period	$ 438,314	$ 465,148	$ 301,697